if (x+1) and (x-1) are faction of ax^3+x^2-2x+b find a and b
Answers
Answer:
Given :-
A curved surface area of a right circular cylinder is 4.4 m² and the radius of the base of the cylinder is 0.7 m.
To Find :-
What is the height of the cylinder.
Formula Used :-
{\purple{\boxed{\large{\bold{C.S.A\: of\: cylinder\: =\: 2{\pi}rh}}}}}
C.S.Aofcylinder=2πrh
where,
r = Radius
h = Height
Solution :-
Let, the height of the cylinder be h
Given :
Curved surface area = 4.4 m²
Radius = 0.7 m
According to the question by using the formula we get,
⇒ \sf 2 \times \dfrac{22}{7} \times 0.7 \times h =\: 4.42×
7
22
×0.7×h=4.4
⇒ \sf 2 \times \dfrac{22}{7} \times \dfrac{7}{10} \times h =\: \dfrac{44}{10}2×
7
22
×
10
7
×h=
10
44
⇒ \sf 2 \times 22 \times h =\: 442×22×h=44
⇒ \sf h =\: \dfrac{44}{22 \times 2}h=
22×2
44
⇒ \sf h =\: \dfrac{\cancel{44}}{\cancel{44}}h=
44
44
➠ \sf\bold{\red{h =\: 1\: m}}h=1m
\therefore∴ The height of the cylinder is 1 m .